package com.itheima.utils;


import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

import java.io.*;

@Component
@Configuration
public class AliOSSUtils {

    // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
    String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
    // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
    String accessKeyId = "LTAI5tS3B78WhcZBQvXhTWoS";
    String accessKeySecret = "BC3gvlevi91w0sx4F8m8rEdIliYfbu";
    // 填写Bucket名称，例如examplebucket。
    String bucketName = "wwwcctvcom";


    // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
//    String objectName = "exampledir/exampleobject.txt";




    /**
     * 上传文件
     */
    public void uploadFile(String name, InputStream is){
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            String content = "Hello OSS";
            ossClient.putObject(bucketName,name,is);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        }finally {
            ossClient.shutdown();
        }
    }


    /**
     * 下载文件
     */
    public void downLoadFile(String objectName,OutputStream os){

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        try {
            // 调用ossClient.getObject返回一个OSSObject实例，该实例包含文件内容及文件元信息。
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            // 调用ossObject.getObjectContent获取文件输入流，可读取此输入流获取其内容。
            InputStream content = ossObject.getObjectContent();

            IOUtils.copy(content,os);

            // 数据读取完成后，获取的流必须关闭，否则会造成连接泄漏，导致请求无连接可用，程序无法正常工作。
            content.close();

        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            ossClient.shutdown();
        }
    }


}
